47186979840 has 2112 divisors, whose sum is σ = 234179420160. Its totient is φ = 8758886400.

The previous prime is 47186979817. The next prime is 47186979863. The reversal of 47186979840 is 4897968174.

47186979840 is a `hidden beast` number, since 471 + 86 + 9 + 7 + 9 + 84 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (47186979817) and next prime (47186979863).

It is a tau number, because it is divible by the number of its divisors (2112).

It is a super-2 number, since 2×47186979840² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1522160625 + ... + 1522160655.

Almost surely, 2^47186979840 is an apocalyptic number.

47186979840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47186979840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117089710080).

47186979840 is an abundant number, since it is smaller than the sum of its proper divisors (186992440320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47186979840 is a wasteful number, since it uses less digits than its factorization.

47186979840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 47186979840 in words is "forty-seven billion, one hundred eighty-six million, nine hundred seventy-nine thousand, eight hundred forty".